Two problems related to power train driveline have been reported for the 2003 Chevrolet Silverado. The most recently reported issues are listed below.
Abnormal noise heard coming from the driveline when slowing down.
Very excessive drivetrain clunk while down shifting 3-2 gear, upshift 2-3 and now is getting worse as 1-2 and 2-1 are clunking due to excessive drive train freeplay. The problem is aggarvated rounding slow cornors, down a grade or with a load. The dealer tried to made me believe I was hearing things and everthing is fine the first time in, yet everyone who rides in it asks "whats that banging". The second time in the dealer for the problem I got a tech service bulletin, which says owners may find the clunk objectionable?? will not adversely affect durability??? there is no way this drivetrain will last as long as a nonclunker. The dealer was also going to get me an extended warranty for drivetrain, which didn't happen. Very frustrated chevy won't fix it. If owners find it objectionable it should be fix.